"Reading between the lines": Magnetospheric accretion, winds, and the inner disk

Aurora Sicilia-Aguilar, Justyn Campbell-White, Jerome Bouvier, Veronica Roccatagliata, Soko Matsumura, Carlo F. Manara, Jos de Boer, Agnes Kospal

Research output: Contribution to conferencePosterpeer-review

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Abstract

What happens in the innermost disk at the time of planet formation? While direct mapping cannot access these regions, emission (and absorption) lines in young stars trace their winds, accretion-related structures, spots, and innermost disk. In the optical, a large number of species with various excitation potentials can provide information on the temperature, density, and velocity of hot and tiny structures. Using <strong>time-resolved spectroscopy</strong> covering several rotational and disk orbital periods, we can obtain a very detailed view of the structure and variability of accretion columns and spots and information on the presence and launching points of stellar/disk winds in young stars. In outbursting sources, the temperature variation allows us to spectroscopically access an even larger region of the disk and surroundings. Here we present the results on several young stars with different properties, discussing what we can learn from "reading between their (spectral) lines" and how to achieve this with the <strong>STAR-MELT Python package</strong>, which will be publicly released soon (see Poster and video by Justyn Campbell-White for further details).
Original languageEnglish
DOIs
Publication statusPublished - Mar 2021
EventCambridge Workshops of Cool Stars, Stellar Systems and the Sun 20.5 - Virtual, United States
Duration: 2 Mar 20214 Mar 2021
http://coolstars20.cfa.harvard.edu/cs20half/index.html

Conference

ConferenceCambridge Workshops of Cool Stars, Stellar Systems and the Sun 20.5
Abbreviated titleCool Stars 20.5 - Virtually Cool
Country/TerritoryUnited States
Period2/03/214/03/21
Internet address

Keywords

  • Young stars
  • Spectroscopy
  • Accretion
  • Planet and Star Formation
  • Python

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